NASA On Air: Great Lakes Ice Time Lapse - Winter 2013 to 2014 (3/25/2015)
LEAD: Instruments aboard NASA satellites are able to track the winter ice growth and retreat across the Great Lakes.
1. Changes in lake ice within a six-month period between 2013 and 2014 can be seen in 18 seconds.
2. The maximum ice extent occurred on March 6, 2014 and covered 92% of the Great Lakes.
3. It was the second most extensive ice cover of the past 40 years of satellite observations.
TAG: The ice in eastern Lake Superior reached a thickness of three and a half feet, which disrupted shipping routes.
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Please give credit for this item to:
NASA's Goddard Space Flight Center